Contact Us

Blue Cross and Blue Shield of Illinois
300 East Randolph Street
Chicago, Illinois 60601-5099

If you are a member with a question about your coverage, contact Customer Service at the number listed on your BCBSIL member ID card.

_________________

Individual and Family Plans

Make a Payment

Mail your payment to the address on your premium invoice or learn about other convenient ways to pay your bill.

Under 65 New Enrollment

1-866-514-8044

Monday – Friday: 8 a.m. – 8 p.m. CT
Saturday: 8 a.m. – 6 p.m. CT
Sunday: 10 a.m. – 2 p.m. CT

Under 65 Customer Service for Existing Members

1-800-538-8833

Monday – Friday: 7 a.m. – 8 p.m. CT
Saturday: 8 a.m. – 5 p.m. CT
Sunday: Closed

_________________

Medicare and Medicare-Medicaid Plans

Medicare Advantage Members: 1-877-774-8592 (TTY 711)

Medicare Part D Members: 1-888-285-2249 (TTY 711)

Medicare Supplement Members: 1-800-624-1723 (TTY 711)

Medicare-Medicaid Members: 1-877-723-7702 (TTY 711)

Medicare Plan Enrollment Information: 1-877-213-1821 (TTY 711)

_________________

Group Plans

HMO Illinois^®/Blue Advantage HMO^SM

HMO: Call the customer service number listed on your member ID card

HMO Blue USA (away from home urgent care): 1-800-810-BLUE (2583)

PPO

PPO: Call the customer service number listed on your member ID card

Out-of-Area BlueCard PPO Providers: 1-800-810-BLUE (2583)

_________________

Additional Contact Information

Pharmacy Program

1-800-423-1973

Membership Address

Blue Cross and Blue Shield of Illinois
P.O. Box 3004
Naperville, IL 60566-9747

Claims Address

Blue Cross and Blue Shield of Illinois
P.O. Box 805107
Chicago, IL 60680-4112

Human Resources Inquiries

1-866-977-7378

Supplier Registration

If you are interested in conducting business with Blue Cross and Blue Shield of Illinois, this link takes you to our Supplier Registration Portal.